IEC 61535:2009

Installation couplers intended for permanent connection in fixed installations

IEC 61535:2009 applies to two up to five wire installation couplers including earth, if provided, with a rated voltage up to and including 500 V a.c. and a rated connecting capacity up to and including 10 mm² for permanent connection in indoor electrical installations. Installation couplers with additional contacts for voltages other than mains voltages are outside the scope of this standard. The contents of the corrigendum of January 2014 have been included in this copy.

Coupleurs d'installation pour connexions permanentes dans les installations fixes

La CEI 61535:2009 s'applique aux coupleurs d'installation comportant de deux à cinq conducteurs y compris le conducteur de terre (le cas échéant), de tension assignée jusqu'à 500 V inclus en courant alternatif et de capacité de connexion assignée jusqu'à 10 mm² inclus, pour connexion permanente dans installations électriques intérieures. Les coupleurs d'installation avec des contacts supplémentaires pour des tensions autres que la tension d'alimentation du réseau ne sont pas couverts par la présente norme. Le contenu du corrigendum de janvier 2014 a été pris en considération dans cet exemplaire.

General Information

• Status: Published
• Publication Date: 15-May-2012
• ICS: 29.120.99 - Other electrical accessories
• Technical Committee: TC 23 - Electrical accessories
• Drafting Committee: MT 6 - TC 23/MT 6
• Current Stage: DELPUB - Deleted Publication
• Start Date: 31-Aug-2017
• Completion Date: 16-Oct-2019

Relations

• Amended By: IEC 61535:2009/AMD1:2012 - Amendment 1 - Installation couplers intended for permanent connection in fixed installations
• Effective Date: 05-Sep-2023
• Corrected By: IEC 61535:2009/COR1:2014 - Corrigendum 1 - Installation couplers intended for permanent connection in fixed installations
• Effective Date: 05-Sep-2023
• Revised: IEC 61535:2019 - Installation couplers intended for permanent connection in fixed installations
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61535 ®
Edition 1.0 2009-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Installation couplers intended for permanent connection in fixed installations

Coupleurs d’installation pour connexions permanentes dans les installations
fixes
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by

any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or

IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.

Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette

publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: [e-mail]
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

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IEC 61535 ®
Edition 1.0 2009-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Installation couplers intended for permanent connection in fixed installations

Coupleurs d’installation pour connexions permanentes dans les installations
fixes
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
X
CODE PRIX
ICS 29.120.99 ISBN 978-2-88910-533-5
– 2 – 61535 © IEC:2009
CONTENTS
FOREWORD.4

1 Scope.6

2 Normative references .6

3 Terms and definitions .7

4 General requirements .9

5 General notes on tests .9

6 Ratings.10

7 Classification.11
7.1 rated impulse voltage: .11
7.2 method of connecting the cable: .11
7.3 degree of protection against ingress of foreign solid objects and ingress of
water according to IEC 60529 (IP-Code) .11
7.4 location where installation couplers will be installed: .11
7.5 existence of an earthing contact: .11
7.6 type of conductor to be connected:.11
7.7 type of terminals for rewirable installation couplers only: .11
8 Marking and documentation.12
9 Dangerous compatibility .13
10 Protection against electric shock .14
11 Terminals, terminations and connectable conductors.15
11.1 Terminals and terminations .15
11.2 Connectable conductors .15
12 Construction .16
13 Protection against harmful ingress of solid foreign objects and against harmful
ingress of water.19
13.1 Protection against harmful ingress of foreign solid objects.19
13.2 Protection against harmful ingress of water .19
14 Insulation resistance and electric strength .20
15 Construction of contacts .21
16 Temperature rise .22
17 Breaking capacity .22

18 Forces necessary to disengage the parts of the installation coupler.23
19 Cables and their connection .23
20 Mechanical strength .27
21 Resistance to heat and ageing .28
22 Screws, current-carrying parts and connections.30
23 Clearances, creepage distances and distances through solid insulation .32
24 Resistance to abnormal heat and to tracking .33
24.1 Resistance to abnormal heat .33
24.2 Resistance to tracking .35
25 Resistance to rusting.35
Annex A (normative) Routine Earth (PE) continuity tests.37
Annex B (normative) Test circuits for temperature rise test (see Clause 16).38

61535 © IEC:2009 – 3 –
Annex C (normative) Number of sets of test samples used for the tests and sequence

of tests for each set .43

Annex D (informative) Guide to use .45

Bibliography.47

Figure 1 – Apparatus for testing the cable anchorage .26

Figure 2 – Apparatus for the measuring of the distortion (example).27

Figure 3 – Ball-pressure apparatus .29

Figure 4 – Explanation of “small part” .35

Figure B.1 – 1P + N + PE installation couplers, including N (left figure), including PE
(right figure).38
Figure B.2 – 3P + N + PE installation couplers, 3 phases loaded (left figure), N and PE
loaded (right figure) .38
Figure B.3 – 1P + N + PE distribution block, phase and N loaded .39
Figure B.4 – 1P + N + PE distribution block, phase and PE loaded .40
Figure B.5 – 3P + N + PE - to 1P + N + PE distribution block, 3 phases loaded .41
Figure B.6 – 3P + N + PE - to 1P + N + PE distribution block, N and PE loaded.42
Figure D.1 – Examples of use of installation couplers .46

Table 1 – Voltage rating for installation couplers.10
Table 2 – Test currents for installation couplers .22
Table 3 – Forces to be applied to cable anchorages .24
Table 4 – Torque applied for the tightening and loosening test.31
Table 5 – Installation couplers intended for use in supply systems.32
Table 5a – Installation couplers intended for use in supply systems with a maximum
voltage to earth of 150 V, rated impulse voltage 2,5 kV.32
Table 5b – Installation couplers intended for use in supply systems with a maximum
voltage to earth of 300 V, rated impulse voltage 4,0 kV.33
Table C.1 – Sets of samples .43

– 4 – 61535 © IEC:2009
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
INSTALLATION COUPLERS INTENDED FOR PERMANENT

CONNECTION IN FIXED INSTALLATIONS

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this prepa
...

IEC 61535 ®
Edition 1.1 2012-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Installation couplers intended for permanent connection in fixed installations

Coupleurs d'installation pour connexions permanentes dans les installations
fixes
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,

please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les

microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.

Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette

publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

Useful links:
IEC publications search - www.iec.ch/searchpub Electropedia - www.electropedia.org
The advanced search enables you to find IEC publications The world's leading online dictionary of electronic and
by a variety of criteria (reference number, text, technical electrical terms containing more than 30 000 terms and
committee,…). definitions in English and French, with equivalent terms in
It also gives information on projects, replaced and additional languages. Also known as the International
withdrawn publications. Electrotechnical Vocabulary (IEV) on-line.

IEC Just Published - webstore.iec.ch/justpublished Customer Service Centre - webstore.iec.ch/csc
Stay up to date on all new IEC publications. Just Published If you wish to give us your feedback on this publication
details all new publications released. Available on-line and or need further assistance, please contact the
also once a month by email. Customer Service Centre: [e-mail].

A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.

Liens utiles:
Recherche de publications CEI - www.iec.ch/searchpub Electropedia - www.electropedia.org
La recherche avancée vous permet de trouver des Le premier dictionnaire en ligne au monde de termes
publications CEI en utilisant différents critères (numéro de électroniques et électriques. Il contient plus de 30 000
référence, texte, comité d’études,…). termes et définitions en anglais et en français, ainsi que
Elle donne aussi des informations sur les projets et les les termes équivalents dans les langues additionnelles.
publications remplacées ou retirées. Egalement appelé Vocabulaire Electrotechnique
International (VEI) en ligne.
Just Published CEI - webstore.iec.ch/justpublished
Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications de la CEI.
Just Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur
Disponible en ligne et aussi une fois par mois par email. cette publication ou si vous avez des questions
contactez-nous: [e-mail].
IEC 61535 ®
Edition 1.1 2012-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Installation couplers intended for permanent connection in fixed installations

Coupleurs d'installation pour connexions permanentes dans les installations

fixes
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX CN
ICS 29.120.99 ISBN 978-2-8322-0113-8

– 2 – 61535  IEC:2009+A1:2012

CONTENTS
FOREWORD . 4

1 Scope . 6

2 Normative references . 6

3 Terms and definitions . 7

4 General requirements . 9

5 General notes on tests . 9

6 Ratings . 10

7 Classification . 11
7.1 rated impulse voltage: . 11
7.2 method of connecting the cable: . 11
7.3 degree of protection against ingress of foreign solid objects and ingress of
water according to IEC 60529 (IP-Code) . 11
7.4 location where installation couplers will be installed: . 11
7.5 existence of an earthing contact: . 11
7.6 type of conductor to be connected: . 11
7.7 type of terminals for rewirable installation couplers only: . 11
8 Marking and documentation . 12
9 Dangerous compatibility . 13
10 Protection against electric shock . 14
11 Terminals, terminations and connectable conductors . 15
11.1 Terminals and terminations . 15
11.2 Connectable conductors . 15
12 Construction . 16
13 Protection against harmful ingress of solid foreign objects and against harmful

ingress of water . 19
13.1 Protection against harmful ingress of foreign solid objects. 19
13.2 Protection against harmful ingress of water . 20
14 Insulation resistance and electric strength . 20
15 Construction of contacts . 21
16 Temperature rise . 22
17 Breaking capacity . 23

18 Forces necessary to disengage the parts of the installation coupler . 23
19 Cables and their connection . 24
20 Mechanical strength . 27
21 Resistance to heat and ageing . 28
22 Screws, current-carrying parts and connections . 30
23 Clearances, creepage distances and distances through solid insulation . 32
24 Resistance to abnormal heat and to tracking . 33
24.1 Resistance to abnormal heat . 33
24.2 Resistance to tracking . 35
25 Resistance to rusting . 35
Annex A (normative) Routine Earth (PE) continuity tests . 37
Annex B (normative) Test circuits for temperature rise test (see Clause 16). 38

61535  IEC:2009+A1:2012 – 3 –

Annex C (normative) Number of sets of test samples used for the tests and sequence

of tests for each set . 43

Annex D (informative) Guide to use . 45

Bibliography . 47

Figure 1 – Apparatus for testing the cable anchorage . 26

Figure 2 – Apparatus for the measuring of the distortion (example) . 27

Figure 3 – Ball-pressure apparatus . 29

Figure 4 – Explanation of “small part” . 35

Figure B.1 – 1P + N + PE installation couplers, including N (left figure), including PE
(right figure) . 38
Figure B.2 – 3P + N + PE installation couplers, 3 phases loaded (left figure), N and PE
loaded (right figure) . 38
Figure B.3 – 1P + N + PE distribution block, phase and N loaded . 39
Figure B.4 – 1P + N + PE distribution block, phase and PE loaded . 40
Figure B.5 – 3P + N + PE - to 1P + N + PE distribution block, 3 phases loaded . 41
Figure B.6 – 3P + N + PE - to 1P + N + PE distribution block, N and PE loaded . 42
Figure D.1 – Examples of use of installation couplers . 46

Table 1 – Voltage rating for installation couplers . 10
Table 2 – Test currents for installation couplers . 22
Table 3 – Forces to be applied to cable anchorages . 25
Table 4 – Torque applied for the tightening and loosening test. 31
Table 5 – Installation couplers intended for use in supply systems . 32
Table 5a – Installation couplers intended for use in supply systems with a maximum
voltage to earth of 150 V, rated impulse voltage 2,5 kV . 32
Table 5b – Installation couplers intended for use in supply systems with a maximum
voltage to earth of 300 V, rated impulse voltage 4,0 kV . 33
Table C.1 – Sets of samples . 43

– 4 – 61535  IEC:2009+A1:2012

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
INSTALLATION COUPLERS INTENDED FOR PERMANENT

CONNECTION IN FIXED INSTALLATIONS

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referre
...